Push-button



(No Model.)

I. J. LIST. PUSH BUTTON.

No. 606 ,562. PatentedJune 28,1898.

devices mentioned and secure a more -desir- -UNITED STATES PATENT OFFICE.

FREDERICK Liston CHELSEA, MASSACHUSETTS;

PUSH-BUTTON.

SPECIFICATION forming part Of Letters Patent NO. 606,562, dated. J une 28, 1898.

' Application filed November 5, 1897. Serial ll'o. 657,494. (No model.)

or Push-Buttons, of which the following is a description sufficiently full, clear, and exact to enable those skilled in the art to whichit appertainsor with which it is most nearly connected to make and use the same.

This invention has relation generally to electric-circuit-closing devices, and particularly to that class of such devices as are comprised within the term push-buttons.

The invention has for its object the provision of such improvements as will simplify the construction and mode of operation of the able movement of the push-button and greater certainty and perfection-of contact than heretofore.

It is also the object of the invention to provide a construction which may provide for the employment of an ornamental escutcheon or guide for the push-button proper. I

To these ends the invention consists of an escutcheon provided with a projecting chamber having a cross-bar or other equivalent means adapted to form one of the contacts, and a push-button guided by theescutcheon and having a coiled wire arranged upon its face to form the other contact, the arrangement of the wire and the support ofthebutton. being such, as hereinafter described, as to effect a straight movement of the button inward and outward, and, as has been said, to provide means whereby the escutcheon may be made of ornamental character.

Reference is to be had to the annexed drawings and to the letters marked thereon, forming a part of this specification, the same letters designating the same parts or features, as the case may be, wherever they occur.

Of the drawings, Figure 1 is an under side view of my circuit-closing device complete, including the escutcheon. Fig, 2 isa face view of the same. .Fig. 3 is a longitudinal vertical sectional view ofthe same.

In the drawingsfla designates the escutcheon or outside plate, which. may be made of porcelain or any other. suitable material. and which may be made ornamental in form,'such as a form resembling the leaf of a tree, as shown in the drawings.

The escutcheon a is provided at substantially a central point on its inner side with an extended chamber 1), which it"is designed to set into the wall or door-casing or other part of a building or piece of material, which chamber is provided at its lower end with a cross-bar c, to which one of the electrodes or wires may be attached, in order that the cross-bar may form one of the contact-points of the circuit-closing device.

01 is the push-button proper,which consists of a piece of porcelain or other suitable ma terial and projects through a hole formed in the escutcheon a and extends beyond the,

head or broadened part 6, around which is coiled the wire f, forming the other electrode, and said wire is also coiled upon the face of the broadened part c and, if need be, projected into a recess g' formed therein, as shown, to hold itin place.

The coil of wire f around the inner face of the push-button and around the same supports it in position and guides it, so that when the push-button is pressed inward to bring the wire f against the cross-bar c the contact will be made and the circuit closed, and when the push-button is released the wire f,-forming the other electrode, will press it back or return it to its normal position, as represented in Fig. 3.

By forming the push-button as shown and arranging the wire f as described in pushing the push-button inward it will not be canted to one side, as is now usually the case, but will be pressed directly inward on a straight line, so as to make sure of bringing the two contact-points together, closing the circuit. When the push-button is released, it is made certain that the circuit will be broken by the separation of the contactpoints.

All of the points mentioned are of importance and are desirable, and the fact that the escutcheon may be made very ornamental and its guide part and necessary cooperating elements may be made of porcelain or other cheap material and serve in a maximum degree to perform their severaLoffices or functions renders the contrivance Very simple, as well as eflicient.

I do not, of course, confine myself to any particular n1aterial,since this may be changed to suit circumstances, and have only mentioned porcelain as one of the best substances now known to me out of which the invention or its principal parts may be made.

Having thus explained the nature of the invention and described a way of constructing and using the same, though without attempting to set forth all of the forms in which it may be made or all of the modes of its use, it is declared that what is claimed is Acircuit-closer consisting of an escutcheon 

